Ionospheric data from GPS and IRI-2016 model

This was collected by a SCINDA GPS receiver installed at Helwan University, Cairo in Egypt which is near the northern crest of the Equatorial Ionisation Anomaly. The receiver was installed by the SCINDA project during the implementation of the International Heliophysical Year program in 2009. The recording of data started in July 2009 up to August 2017 before the receiver become faulty. The actual raw files were preprocessed to textfiles for each year named "Myfiletec'year'". There are 9 text files each with 5 columns of data in the order of DOY, hh, mm, TEC, SI representing doy of the year, hour, minute, total electron content, and scintillation index respectively. The IRI data was got from the Community Coordinated Modeling Center (https://ccmc.gsfc.nasa.gov/models/modelinfo.php?model=IRI) by running year requests from 20009 to 2017. The text files contained the parameters in the following order of year, month, day, hour, minute, second, geographical positions (longitude & latitude), height, electron density, ,TEC, and peak density (NmF2).

本数据集由安装于埃及开罗赫勒万大学的SCINDA型GPS接收机采集获取，该站点毗邻赤道电离异常（Equatorial Ionisation Anomaly）北脊区域。该接收机由SCINDA项目在2009年国际日球物理年（International Heliophysical Year）计划实施期间部署完成。数据采集工作始于2009年7月，持续至2017年8月，后因接收机故障终止。原始数据文件已被预处理为按年份命名的文本文件，文件名格式为"Myfiletec年份"。本次共包含9个文本文件，每个文件均包含5列数据，依次为日序（DOY）、小时（hh）、分钟（mm）、总电子含量（TEC）与闪烁指数（SI），分别对应年积日、时、分、总电子含量及闪烁指数。国际参考电离层（IRI，International Reference Ionosphere）数据通过向社区协调建模中心（Community Coordinated Modeling Center，https://ccmc.gsfc.nasa.gov/models/modelinfo.php?model=IRI）提交2009至2017年的请求获取。该文本文件包含以下依次排列的参数：年份、月、日、时、分、秒、地理位置（经度与纬度）、高度、电子密度、总电子含量（TEC）以及F2层峰值密度（NmF2）。